Connector assembly for detachably connecting a printed wiring board to a coaxial transmission lines connector

Abstract

A connector assembly for detachably connecting a coaxial transmission line connector to a strip lead formed on a printed wiring board is disclosed. The connector assembly includes a metallic housing to house a printed wiring board circuit having a micro-strip defined by a lead on one surface of the board and a ground plane on the other surface of the board. The housing includes a low-impedance, coaxial line section formed by an opening extending through one wall of the housing and a center conductor supported in the opening by a dielectric sleeve. A connector with a lead connected to the micro-strip lead and a body with a central insulated socket spaced from a ground plane on the surface of the board forms a transmission line section. The center conductor is slidably received in the socket, whereby the coaxial connector can be easily attached to connect the printed wiring board to the coaxial transmission line.

What is claimed: 
     
       1. A connector assembly for detachably connecting a printed wiring board to a threaded coaxial connector having a coaxial center lead, said connector assembly comprising: a coaxial transmission line section comprising a center conductor connected to said coaxial center lead of said coaxial connector, said center conductor supported in a dielectric sleeve;   a first socket to slidably receive said center conductor;   a right angle pin connected to said socket;   a transmission line lead carried on a surface of said printed wiring board, said transmission line connected to said right angle pin and having impedance matching sections for providing impedance matching between the coaxial connector and the transmission line lead;   a ground plane section carried on said printed wiring board; and   an insulating sleeve surrounding said first socket whereby said first socket forms a transmission line with said ground plane section.   
     
     
       2. The connector assembly of claim 1 wherein said transmission line lead comprises: a first section having low impedance relative to the characteristic impedance; and   a second section having high impedance relative to the characteristic impedance.   
     
     
       3. The connector assembly of claim 1, wherein said first socket, said right angle pin, said transmission line lead, said ground plane section and said insulating sleeve are configured to match impedance of said coaxial connector and said transmission line section. 
     
     
       4. The connector assembly of claim 2 wherein said first section and said second section tune out inductive effects associated with said right angle pin. 
     
     
       5. The connector assembly of claim 1 wherein said coaxial connector is a spark-plug connector. 
     
     
       6. The connector assembly of claim 1 wherein said transmission line lead is a micro-strip lead. 
     
     
       7. The connector assembly of claim 1 further comprising a second socket connected to said first socket and to said printed wiring board to prevent rotation of said first socket. 
     
     
       8. The connector assembly of claim 1 wherein said connector assembly supports a frequency operation range of up to 3.8 GHz.